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US2691827A
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Adjustable orifice unit
Assignee: Sheffield Corp
•
Filing: 1950-08-17
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Granted: 1954-10-19
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Expires: 1970-08-17
Abstract
No abstract record available.
Inventors
- 👤 Aller Willis Fay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:13
CPC Classifications
G; G01; G01B; G01B13/00; Y; Y10; Y10S; Y10S33/00; Y10S33/01; Y10S33/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1661701A
Cited
US2218871A
Cited
US2249611A
Cited
US2504212A
Cited
US2490376A
Cited
US2527173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |